Chaotic solitons in deoxyribonucleic acid (DNA) interacting with a plane wave

Theoretical analysis of the DNA dynamics, reveals that interaction between the single solitons and plane wave implies Smale-horseshoe chaos in the dou ble helices. Solutions of the chaotic solitons are derived from a direct pe rturbation technique. It is demonstrated that to produce the bounded chaoti c solitons, velocities of the solitons must be the same and equal to propag ation velocity of the plane wave in DNA. The result shows that the DNA stru cture may be destroyed by the long action of an electromagnetic wave. It al so supplies a useful method for controlling the velocities and unboundednes s of the DNA motion in a tumour cell by using a plane wave.